alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP PacketShare Proxy Client Login (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|2f|CLogin|3f|key|3d|"; startswith; fast_pattern; http.user_agent; bsize:9; content:"Lingjiang"; http.accept_enc; bsize:4; content:"gzip"; threshold:type limit, seconds 300, count 1, track by_src; reference:url,trendmicro.com/en_us/research/23/b/hijacking-your-bandwidth-how-proxyware-apps-open-you-up-to-risk.html; classtype:misc-activity; sid:2048498; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_10_09, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, tag proxyware, updated_at 2024_03_27;)